Aroostook County, Maine
Local growing conditions for Aroostook County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 41 ZIP codes in our data.
Hardiness zones in Aroostook County
Aroostook County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Aroostook County for its live forecast, frost dates, and planting calendar:
Houlton 04730
Eagle Lake 04737
Limestone 04750
Mattawamkeag 04451
Mattawamkeag 04459
Houlton 04471
Danforth 04497
Ashland 04732
East Millinocket 04733
Blaine 04734
Blaine 04735
Caribou 04736
Eagle Lake 04739
Presque Isle 04740
Fort Fairfield 04742
Fort Kent 04743
Madawaska 04745
Grand Isle 04746
Island Falls 04747
Madawaska 04756
Mapleton 04757
Mars Hill 04758
Blaine 04760
Houlton 04761
More for Maine
- Agriculture in Maine
- Frost dates across Maine
- USDA hardiness zones explained
- Planting calendar by ZIP code
County growing conditions are compiled from our ZIP-code database, USDA hardiness-zone data, and NOAA climate normals. Conditions vary within a county by elevation and local microclimate. Page updated Aug 4, 2026.